Stockholders’ Equity - Summary of Common Stock Issuances Related to the Warrant Exercises (Details) - shares	Sep. 30, 2021	Dec. 31, 2020	Sep. 29, 2020
Equity [Abstract]
Warrants outstanding upon Closing (in shares)	24,876,512	24,876,512
Warrants exercised to date (in shares)	18,902,642	9,598,538
Warrants outstanding (in shares)	5,973,870	15,277,974	24,876,512
Aggregated common shares issuable upon exercise of warrants (in shares)	18,657,384	18,657,384
Common shares issued upon exercise of warrants (in shares)	14,176,959	7,198,898
Remaining common shares issued upon exercise of warrants (in shares)	4,480,425	11,458,486